John Carr
@johncarrabc.bsky.social
Interested in electricity generation and the realities of climate change.
Born in UK, living in France. Retired research scientist.
Website: https://www.climate-and-hope.net
Born in UK, living in France. Retired research scientist.
Website: https://www.climate-and-hope.net
Here is a plot of the average dose to a person. Medicine is 42% on average, natural radioactivity 58%. All other sources tiny, less than 1%.
I persist because the is a great deal of misunderstanding of natural radioactivity.
I persist because the is a great deal of misunderstanding of natural radioactivity.
June 11, 2025 at 5:58 AM
Here is a plot of the average dose to a person. Medicine is 42% on average, natural radioactivity 58%. All other sources tiny, less than 1%.
I persist because the is a great deal of misunderstanding of natural radioactivity.
I persist because the is a great deal of misunderstanding of natural radioactivity.
Here are measurements of radioactivity in Bordeaux wine for vintage. This show that vintage years 1957 and 1963 had levels of 2500 mBq/litre while Chernobyl vintage had 200 mBq/litre. Clearly the years of atmospheric weapons testing gave vastly more contamination than the Chernobyl accident.
3/N
3/N
June 11, 2025 at 4:49 AM
Here are measurements of radioactivity in Bordeaux wine for vintage. This show that vintage years 1957 and 1963 had levels of 2500 mBq/litre while Chernobyl vintage had 200 mBq/litre. Clearly the years of atmospheric weapons testing gave vastly more contamination than the Chernobyl accident.
3/N
3/N
Here is carbon intensity data from Our World in Data. It only goes up to 2023 but it is impossible that the UK halves from 2023 to 2024.
As you say the UK will loss most of its local nuclear power generation before 2030, this make is impossible it will be "sub 50" in 2030.
Best to be realistic.
As you say the UK will loss most of its local nuclear power generation before 2030, this make is impossible it will be "sub 50" in 2030.
Best to be realistic.
March 11, 2025 at 2:03 PM
Here is carbon intensity data from Our World in Data. It only goes up to 2023 but it is impossible that the UK halves from 2023 to 2024.
As you say the UK will loss most of its local nuclear power generation before 2030, this make is impossible it will be "sub 50" in 2030.
Best to be realistic.
As you say the UK will loss most of its local nuclear power generation before 2030, this make is impossible it will be "sub 50" in 2030.
Best to be realistic.
Here is a plot I have made for about 30 European countries showing the carbon intensity for different fractions of hydro+nuclear and wind+solar (size of bulb). If the UK wants low carbon intensity it must build more nuclear, more wind+solar will not help because of gas backup.
March 8, 2025 at 2:21 PM
Here is a plot I have made for about 30 European countries showing the carbon intensity for different fractions of hydro+nuclear and wind+solar (size of bulb). If the UK wants low carbon intensity it must build more nuclear, more wind+solar will not help because of gas backup.
It is the start-up tritium which is the biggest problem. The expectation is the CANDU reactors will start to be retired soon. Tritium stocks decay and then ITER uses up all the supplies. The fusion industry must build a fleet of fission reactors to provide to start.
March 8, 2025 at 5:49 AM
It is the start-up tritium which is the biggest problem. The expectation is the CANDU reactors will start to be retired soon. Tritium stocks decay and then ITER uses up all the supplies. The fusion industry must build a fleet of fission reactors to provide to start.
Here are the actual wind correlations. It is very high between adjacent countries. You have to go 1000 km to avoid the correlations.
January 18, 2025 at 12:23 PM
Here are the actual wind correlations. It is very high between adjacent countries. You have to go 1000 km to avoid the correlations.
First interconnect to France was installed in 1986. The large increase in import capacity has been in the past decade.
The common argument now for wind is that when it is off in the UK it can be imported. But this is false because much wind capacity in both the UK and the EU is in the North Sea.
The common argument now for wind is that when it is off in the UK it can be imported. But this is false because much wind capacity in both the UK and the EU is in the North Sea.
January 18, 2025 at 11:55 AM
First interconnect to France was installed in 1986. The large increase in import capacity has been in the past decade.
The common argument now for wind is that when it is off in the UK it can be imported. But this is false because much wind capacity in both the UK and the EU is in the North Sea.
The common argument now for wind is that when it is off in the UK it can be imported. But this is false because much wind capacity in both the UK and the EU is in the North Sea.
The increasing price of electricity in Germany due to the closing of the nuclear power plants is seriously affecting the competitiveness of German industry.
The ruling coalition has collapsed and there will be an early election in likely in February.
The opinion polls indicate the CDU as winners.
The ruling coalition has collapsed and there will be an early election in likely in February.
The opinion polls indicate the CDU as winners.
December 5, 2024 at 2:26 PM
The increasing price of electricity in Germany due to the closing of the nuclear power plants is seriously affecting the competitiveness of German industry.
The ruling coalition has collapsed and there will be an early election in likely in February.
The opinion polls indicate the CDU as winners.
The ruling coalition has collapsed and there will be an early election in likely in February.
The opinion polls indicate the CDU as winners.
La Ciotat, last Christmas.
December 3, 2024 at 2:13 PM
La Ciotat, last Christmas.
This excellent book explains that the US has fallen way behind in producing semiconductor chips and equipment. Chip production is now dominate in Taiwan and Korea and local China production is growing. The Netherlands dominates in lithography equipment.
December 3, 2024 at 7:12 AM
This excellent book explains that the US has fallen way behind in producing semiconductor chips and equipment. Chip production is now dominate in Taiwan and Korea and local China production is growing. The Netherlands dominates in lithography equipment.
November 29, 2024 at 6:10 AM
An essential book to understand the uncertainties in climate change data, predictions and interpretations.
November 22, 2024 at 11:44 AM
An essential book to understand the uncertainties in climate change data, predictions and interpretations.
Mont Blanc seen from Ferney-Voltaire
November 22, 2024 at 10:13 AM
Mont Blanc seen from Ferney-Voltaire
Excellent book from Hans Reinders which explains why nobody should expect electricity generation from nuclear fusion anytime soon.
November 22, 2024 at 6:12 AM
Excellent book from Hans Reinders which explains why nobody should expect electricity generation from nuclear fusion anytime soon.
Excellent book with essential facts about semiconductor industry.
e.g.all Apple microprocessors are made in Taiwan, perhaps explaining USA interest in its independence from China.
e.g.all Apple microprocessors are made in Taiwan, perhaps explaining USA interest in its independence from China.
November 20, 2024 at 10:11 AM
Excellent book with essential facts about semiconductor industry.
e.g.all Apple microprocessors are made in Taiwan, perhaps explaining USA interest in its independence from China.
e.g.all Apple microprocessors are made in Taiwan, perhaps explaining USA interest in its independence from China.
Picked this up at Montreal airport. I found this really impressive. Learned a lot about the world that I should have known.
November 19, 2024 at 10:16 AM
Picked this up at Montreal airport. I found this really impressive. Learned a lot about the world that I should have known.